NEW CONSTRAINTS ON THE COOLING OF THE CENTRAL COMPACT OBJECT IN CAS A

@article{Posselt2013NEWCO,
  title={NEW CONSTRAINTS ON THE COOLING OF THE CENTRAL COMPACT OBJECT IN CAS A},
  author={Bettina Posselt and George G. Pavlov and Valery F. Suleimanov and Oleg Kargaltsev},
  journal={The Astrophysical Journal},
  year={2013},
  volume={779}
}
To examine the previously claimed fast cooling of the Central Compact Object (CCO) in the Cas A supernova remnant (SNR), we analyzed two Chandra observations of this CCO, taken in a setup minimizing instrumental spectral distortions. We fit the two CCO X-ray spectra from 2006 and 2012 with hydrogen and carbon neutron star atmosphere models. The temperature and flux changes in the 5.5 yr between the two epochs depend on the adopted constraints on the fitting parameters and the uncertainties of… 
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